gst/gstvalue.c: use ints and return ints, fractions only use ints, too, so this avoid...

gst/gstvalue.c: use ints and return ints, fractions only use ints, too, so this avoids accidently casting multiplicat...

Original commit message from CVS:
* gst/gstvalue.c: (gst_greatest_common_divisor):
use ints and return ints, fractions only use ints, too, so this
avoids accidently casting multiplications to unsigned
(gst_value_lcopy_fraction): it's ints, not uint32
(gst_value_set_fraction): disallow minint, multiplying and negation
are broken with it
(gst_value_fraction_multiply): fix to make large numbers work and get
rid of the assumption that the multiplication of two ints fits an
int64 - dunno if that's true for all systems
* testsuite/caps/Makefile.am:
* testsuite/caps/fraction-multiply-and-zero.c:
(check_multiplication), (check_equal), (zero_test), (main):
add tests for all the stuff above
* testsuite/caps/value_compare.c: (test1):
fix comment
* tests/.cvsignore:
* testsuite/caps/.cvsignore:
* testsuite/debug/.cvsignore:
* testsuite/dlopen/.cvsignore:
* testsuite/states/.cvsignore:
get up to date