build: Make sure --target-glib used with Vala is the correct GLib version
build: Make sure --target-glib used with Vala is the correct GLib version

Was set to 2.34, now we use ${GLIB_REQUIRED} in configure.

This avoids a bunch of deprecation warnings about g_type_init() (fixed in
2.36) and since we depend on ${GLIB_REQUIRED} it's fine if earlier versions
break with Vala built C.

outofbits/tracker,hoheinzollern/tracker,hoheinzollern/tracker,outofbits/tracker,hoheinzollern/tracker,outofbits/tracker,hoheinzollern/tracker,hoheinzollern/tracker,outofbits/tracker,outofbits/tracker,hoheinzollern/tracker,outofbits/tracker,hoheinzollern/tracker,outofbits/tracker