Bug#750097: coinor-ipopt: Remove pkg-config from build-conflicts by configuring with --disable-pkg-config.

Source: coinor-ipopt Severity: wishlist Dear Maintainer, pkg-config is included in the build-conflicts because of some issues with fakeroot. However, if the `--disable-pkg-config' option is passed to the configure script (e.g. with DEB_CONFIGURE_EXTRA_FLAGS) then the build does not use pkg-config

Bug#643721: coinor-libipopt-dev: invalid "requires: coinhsl" in ipopt.pc

Package: coinor-libipopt-dev Version: 3.9.2-1 Severity: normal The pkg-config file for ipopt ( /usr/lib/pkgconfig/ipopt.pc ) is listing as a linking requirement the coinhsl.pc. HSL is the Harwell Subroutine Library which has a proprietary license and is a third-party add-on. They are not included