Reduce heap allocation in format string parsers.

Reduce heap allocation in format string parsers.

* gettext-tools/src/format-awk.c (struct spec): Remove 'allocated' field.
(format_parse): Use a local variable instead.
* gettext-tools/src/format-boost.c: Likewise.
* gettext-tools/src/format-elisp.c: Likewise.
* gettext-tools/src/format-gcc-internal.c: Likewise.
* gettext-tools/src/format-java-printf.c: Likewise.
* gettext-tools/src/format-javascript.c: Likewise.
* gettext-tools/src/format-kde.c: Likewise.
* gettext-tools/src/format-librep.c: Likewise.
* gettext-tools/src/format-lua.c: Likewise.
* gettext-tools/src/format-perl-brace.c: Likewise.
* gettext-tools/src/format-python.c: Likewise.
* gettext-tools/src/format-sh.c: Likewise.
* gettext-tools/src/format-tcl.c: Likewise.
* gettext-tools/src/format-c-parse.h (struct spec): Remove 'allocated' field.
(format_parse_entrails): Use a local variable instead.
* gettext-tools/src/format-pascal.c (struct spec): Remove 'allocated' field.
(format_parse): Rename a local variable.
* gettext-tools/src/format-perl.c: Likewise.
* gettext-tools/src/format-php.c: Likewise.
* gettext-tools/src/format-gfc-internal.c (format_parse): Rename a local
variable.