`configure.ac` and `bootstrap.sh` are moved in the top directory.
`bootstrap.sh` is completed to execute `libtoolize`. The list of files
to clean is reduced. Other files can be cleaned with `make distclean`.
`src/Makefile.am` is fixed for missing `gd_nnquant.c` dependency.
`ACX_PTHREAD` macro is moved to a `m4` directory to make `configure.ac`
easier to read.
--HG--
branch : fix/autotools
rename : src/bootstrap.sh => bootstrap.sh
rename : src/configure.ac => configure.ac
Ondřej Surý
Vincent Bernat
tabe