dont build on glib <2.14

[angel_il]

regex.c: In function `mc_searchregex_found_cond_one':
regex.c:261: error: `MC_SEARCHNUM_REPL_ARGS' undeclared (first use in this function)
regex.c:261: error: (Each undeclared identifier is reported only once
regex.c:261: error: for each function it appears in.)
regex.c: In function `mc_searchcond_struct_new_init_regex':
regex.c:543: warning: passing arg 3 of `regerror' discards qualifiers from pointer target type
regex.c:545: warning: assignment discards qualifiers from pointer target type
regex.c:550: error: `MC_SEARCHNUM_REPL_ARGS' undeclared (first use in this function)

[angel_il]

fix: typo in const names