mpfr: removed ugly cumulative patch file handling in favour of using single upstream patch files

base/mpfr/mpfr.conf

@@ -20,8 +20,7 @@
 #  --with-irix64=on/off    Irix 32/64 bits support
 #  --with-mulhigh-size=NUM Internal threshold table for mulhigh
 
-cumulative_patch=$(match_source_file -p 'patch')
-var_append patchfiles ' ' "$cumulative_patch"
+var_append patchfiles ' ' "$(match_source_file -p '.*\.patch')"
 
 if atstage toolchain; then
 	var_append extraconfopt ' ' '--with-gmp-include=$root/$includedir'