xgettext: Freshly initialize all static variables for each input file.

xgettext: Freshly initialize all static variables for each input file.

* gettext-tools/src/x-c.c (extract_whole_file): Initialize
phase1_pushback_length, phase2_pushback_length, phase3_pushback_length,
phase5_pushback_length, phase6_pushback_length.
* gettext-tools/src/x-csharp.c (extract_csharp): Initialize
phase1_pushback_length, phase2_pushback_length, phase3_pushback_length,
phase5_pushback_length, phase6_pushback_length, phase7_pushback_length.
* gettext-tools/src/x-java.c (extract_java): Initialize phase1_pushback_length,
phase2_pushback_length, phase3_pushback_length, phase5_pushback_length,
phase6_pushback_length.
* gettext-tools/src/x-javascript.c (continuation_or_nonblank_line,
last_token_type): Remove static initialization.
(extract_javascript): Initialize phase1_pushback_length, phase2_pushback_length,
phase5_pushback_length, last_token_type.
* gettext-tools/src/x-lua.c (first_character): Change type to 'bool'. Remove
static initialization.
(extract_lua): Initialize phase1_pushback_length, first_character,
phase3_pushback_length, phase4_last, phase4_pushback_length.
* gettext-tools/src/x-perl.c (extract_perl): Reorder initializations.
* gettext-tools/src/x-php.c (extract_php): Initialize phase1_pushback_length,
phase3_pushback_length, phase4_pushback_length.
* gettext-tools/src/x-python.c (continuation_or_nonblank_line): Remove static
initialization.
(extract_python): Initialize phase1_pushback_length, phase2_pushback_length,
phase5_pushback_length.
* gettext-tools/src/x-sh.c (extract_sh): Initialize phase1_pushback_length,
phase2_pushback_length.
* gettext-tools/src/x-smalltalk.c (extract_smalltalk): Initialize
phase2_pushback_length, phase3_pushback_length.
* gettext-tools/src/x-tcl.c (extract_tcl): Initialize phase1_pushback_length,
phase2_pushback_length.
* gettext-tools/src/x-vala.c (last_token_type): Remove static initialization.
(extract_vala): Initialize phase1_pushback_length, phase3_pushback_length,
last_token_type.
* gettext-tools/src/x-ycp.c (extract_ycp): Initialize phase2_pushback_length,
phase5_pushback_length, phase8_pushback_length.