The glew 2.0.0 release added support for building for EGL:

  http://glew.sourceforge.net/log.html

Add PACKAGECONFIG options for 'opengl' (ie the previous default, with
dependencies on opengl and X11) and 'egl-gles2', which depends on EGL
and GLESv2 and allow glew to be built for non-X11 distros.

Signed-off-by: Andre McCurdy <armccurdy@gmail.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>

1.13.0 -> 2.0.0

v2:
        Fix installed-vs-shipped QA error for multilib build

Signed-off-by: Maxin B. John <maxin.john@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

Instead of patching in a whole new build system using autotools, use the
makefile-based system in upstream with careful variable assignments so that it
cross-compiles correctly.  One small patch was required to stop an unavoidable
strip.

Upstream does have a cmake-based build but it's not used or supported by the
maintainer, and is quite buggy (for example: doesn't version the libraries,
fails to link to required libraries).

Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

The pkgconfig file doesn't need to know what CFLAGS we're using to build with.

Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

Signed-off-by: Alexander Kanavin <alexander.kanavin@linux.intel.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>

* it's not complete, but recipes depending on virtual/libx11 are easiest
  to spot, I've long list of PNBLACKLIST for all recipes which cannot
  be built in distro without x11 in DISTRO_FEATURES

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

Signed-off-by: Saul Wold <sgw@linux.intel.com>

Without this fix, building mesa-demos with the glew
PACKAGECONFIG will result in errors like the below
being logged in tmp/work/*/mesa-demos/*/build/config.log:

    configure:16529: checking for GLEW
    configure:16536: $PKG_CONFIG --exists --print-errors "glew >= 1.5.4"
    Package @requireslib@ was not found in the pkg-config search path.
    Perhaps you should add the directory containing `@requireslib@.pc'
    to the PKG_CONFIG_PATH environment variable
    Package '@requireslib@', required by 'glew', not found
    configure:16539: $? = 1

Signed-off-by: Drew Moseley <drew_moseley@mentor.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>

Rebase patch and move patches from too generic files to glew

Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>