message catalogs: fix comment lines, also remove linux hack in merge.c

According to the spec, blank lines in message catalogs or lines
beginning with '$ ' are valid comments.

However, there were many cases where lines in the message catalogs
contained just a single '$', without the required space after it.

Under linux, this caused 126766 error lines (in my builds) of the
form:

... unknown directive `': line ignored

This also causes gencat to exit with a non-0 exit code.  Even though
gencat says it ignores the line, it really doesn't.

An early porting change to programs/localized/util/merge.c was made to
ignore this return value on linux.  This hack has now been removed.

Build logs are a lot smaller and cleaner now.

cde/programs/localized/zh_CN.dt-eucCN/msg/dthelpgen.msg

@@ -1,48 +1,48 @@
 $ $XConsortium: dthelpgen.msg /main/3 1995/11/08 13:50:38 rswiston $
 $ *****************************************************************************
-$
+$ 
 $ ***** NOTE FOR MESSAGE CATALOG TRANSLATORS *****
-$
+$ 
 $ There may be three types of messages in this file:
-$
+$ 
 $  1. Messages that appear in dialogs or are displayed to the user.
-$
+$ 
 $     These messages are the default and they should ALL BE LOCALIZED.
 $     Note that these messages do NOT have any identification (see the
 $     comments for type 2 and 3 below).
-$
+$ 
 $  2. Messages that only appear in the DT error log file ($HOME/.dt/errorlog).
-$
+$ 
 $     The localization of these messages is OPTIONAL.  These messages are
 $     identified by the following:
-$
+$ 
 $  MESSAGES xx-yy IN SET zz WILL ONLY APPEAR IN THE DT ERRORLOG FILE
-$
+$ 
 $  3. Messages that should not be localized.
-$
+$ 
 $     These messages are identified by the following:
-$
+$ 
 $  DO NOT TRANSLATE or CHANGE or LOCALIZE MESSAGES xx-yy from set zz
-$
+$ 
 $ ***** END (NOTE FOR MESSAGE CATALOG TRANSLATORS) *****
-$
+$ 
 $ ******************************************************************************
-$
+$ 
 $set 1
-$
+$ 
 $ _DtMessage 1 is the usage message
-$
+$ 
 $ Localize only the words 'directory', 'name', and 'language'.
 $ 'directory' means the directory name in which the resulting files
 $ will be placed. 'name' mean what base name to give the files placed
 $ in 'directory'. 'language' means which localized versions of help files
 $ to look for.
-$
+$ 
 1 %s -dir <目录> [-generate] [-file <名字>] [-lang <语言>]\n
 
-$
+$ 
 $ Mesages 2-18 are error messages.
-$
+$ 
 2 %s: %s 的元素不是一个目录\n
 3 %s: 对目录 %s 的访问被拒绝。\n试着作为超级用户运行?\n
 4 %s: %s 的元素不存在\n
@@ -63,33 +63,33 @@ $
 19 %s: 不能分配存储器\n
 20 %s: 指定了无效的系统语言 %s\n
 
-$
+$ 
 $set 2
-$
+$ 
 $ Specifies the character set used to create this file
-$
+$ 
 $ This must be localized for the various languages. That is
 $ for Japanese shift JIS, it would be 'ja_JP.SJIS'; for Japanese 
 $ EUC it would be 'ja_JP.eucJP'. For files written using
 $ HP Roman8 character set it would be '<lang+terr>.HP-ROMAN8', etc.
 $ The set of allowable locale strings can be found in
 $ /usr/dt/config/svc/CDE.lcx
-$
+$ 
 1 zh_CN.EUC-CN
 
-$
+$ 
 $ Specifies the title for the browser.
 $ It is used in the body of text displayed to the user.
-$
+$ 
 2 欢迎使用提示管理程序
 
-$
+$ 
 $ Specifies the body of text displayed in the browser.
-$
+$ 
 $ When localizing, DO NOT alter any text between the "<" and ">" pairs.
 $ That is - DO NOT localize the tags such as <ABBREV> and <PARAGRAPH>.
 $           DO     localize the text between the tags.
-$
+$ 
 3 <ABBREV>欢迎使用提示管理程序</ABBREV>            \
 <PARAGRAPH>以下所列的每一标题代表一个已安装并注册了\
 联机提示的<ANGLE italic>产品系列</>。每一标题\
@@ -103,19 +103,19 @@ $
 <PARAGRAPH first 1 left 3 label "<CHAR C.DT-SYMBOL-1><0xB7></>">        \
 如果你在使用提示窗口时需要提示，请按 F1 键。</PARAGRAPH>
 
-$
+$ 
 $ Specifies the Volume Title
-$
+$ 
 4 提示 - 顶层
 
-$
+$ 
 $ Specifies the preamble to the help file if no volumes or family files
 $ are found.
-$
+$ 
 $ When localizing, DO NOT alter any text between the "<" and ">" pairs.
 $ That is - DO NOT localize the tags such as <ABBREV> and <PARAGRAPH>.
 $           DO     localize the text between the tags.
-$
+$ 
 5 <ABBREV>欢迎使用提示管理程序</ABBREV>                        \
 <LINK 0 "Help4Help How-To-Register-Help">                      \
 <TYPE serif><WEIGHT bold><SIZE 12><ANGLE italic>               \
@@ -126,26 +126,26 @@ $
 的联机提示文件。</>  在某些应用程序中可以                      \
 直接在应用程序中选择‘提示’命令获得提示。</>
 
-$
+$ 
 $ Specifies the title to use in the dthelpgen dtksh dialog.
-$
+$ 
 6 dthelpgen
 
-$
+$ 
 $ Specifies the message to display in the dthelpgen dtksh dialog.
 $ This message indicates that dthelpgen is building (or rebuilding)
 $ the browser information.
-$
+$ 
 7 生成浏览器信息。请等待。
 
-$
+$ 
 $set 3
-$
+$ 
 $ ******* Text Formatting Templates ********
 $ DO NOT TRANSLATE THESE MESSAGES
 $ DO NOT CHANGE THESE MESSAGES
 $ DO NOT LOCALIZE THESE MESSAGES
-$
+$ 
 1 <TOPIC charset %s>
 2 <TITLE><TYPE serif><WEIGHT bold><SIZE 14>%s</SIZE></WEIGHT></TYPE></TITLE>
 3 <PARAGRAPH before 1 first 1 left 1>