[bug-gawk] Fix paths in POTFILES.in

[Rafael Fontenelle]

Fix path of some files listed in POTFILES.in, which will allow POT and PO
update via commands like 'make gawk.pot-update' or 'intltool-update <lang>'.
Not sure whether this represents serious impact on generation PO files for
Translation Project.

diff --git a/po/POTFILES.in b/po/POTFILES.in
index 0781efc1..4ecb6c29 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -7,7 +7,7 @@ builtin.c
 cint_array.c
 command.c
 debug.c
-dfa.c
+support/dfa.c
 eval.c
 ext.c
 extension/filefuncs.c
@@ -29,8 +29,8 @@ field.c
 floatcomp.c
 gawkapi.c
 gawkmisc.c
-getopt.c
-getopt1.c
+support/getopt.c
+support/getopt1.c
 int_array.c
 io.c
 main.c
@@ -39,12 +39,12 @@ msg.c
 node.c
 posix/gawkmisc.c
 profile.c
-random.c
+support/random.c
 re.c
-regcomp.c
-regex.c
-regex_internal.c
-regexec.c
+support/regcomp.c
+support/regex.c
+support/regex_internal.c
+support/regexec.c
 replace.c
 str_array.c
 symbol.c