Fix libtoolize bug (Gentoo specific)

I found a problem with `install` script:
```
/root/php/cphalcon/build/64bits/libtool: line 482: CDPATH: command not found
libtool: Version mismatch error.  This is libtool 2.4.2, but the
libtool: definition of this LT_INIT comes from an older release.
libtool: You should recreate aclocal.m4 with macros from libtool 2.4.2
libtool: and run autoconf again.
```
Solution is running `aclocal`, `libtoolize`, `autoheader` and `autoreconf` before running `configure` and `make`. I found that similar lines was added to `travis-install` some time ago. So I used it here to fix problem.


As requested branch 1.2.5.