- added gcc44,missing-prototypes,sign patches from Fedora (error or warning fixes)

- added gcc44,missing-prototypes,sign patches from Fedora (error or warning fixes)
- outdated (no longer applying) m4-quotes patch left for still valid testcase
- passing -fPIC through specflags is not valid (not used in debug builds);
  also, libfl_pic.a (-lfl_pic) instead of libfl.a should be used where PIC is needed

Changed files:
    flex-gcc44.patch -> 1.1
    flex-missing-prototypes.patch -> 1.1
    flex-sign.patch -> 1.1
    flex.spec -> 1.81