mesalib: Update version from 17.0.3 to 17.1.3

Only list the changes for Mesa 17.1.0 [1]:

> Mesa 17.1.0 Release Notes / May 10, 2017
> ========================================
>
> […]
>
> Mesa 17.1.0 implements the OpenGL 4.5 API, but the version reported by
> glGetString(GL_VERSION) or glGetIntegerv(GL_MAJOR_VERSION) /
> glGetIntegerv(GL_MINOR_VERSION) depends on the particular driver being
> used. Some drivers don't support all the features required in OpenGL
> 4.5. OpenGL 4.5 is only available if requested at context creation
> because compatibility contexts are not supported.
>
> New features
> ------------
>
>  Note: some of the new features are only available with certain
>  drivers.
>
>  *   OpenGL 4.2 on i965/ivb
>  *   GL_ARB_gpu_shader_fp64 on i965/ivybridge
>  *   GL_ARB_gpu_shader_int64 on i965/gen8+, nvc0, radeonsi, softpipe, llvmpipe
>  *   GL_ARB_shader_ballot on nvc0, radeonsi
>  *   GL_ARB_shader_clock on nv50, nvc0, radeonsi
>  *   GL_ARB_shader_group_vote on radeonsi
>  *   GL_ARB_shader_precision on i965/ivb
>  *   GL_ARB_shader_viewport_layer_array on radeonsi
>  *   GL_ARB_sparse_buffer on radeonsi/CIK+
>  *   GL_ARB_transform_feedback2 on i965/gen6
>  *   GL_ARB_transform_feedback_overflow_query on i965/gen6+
>  *   GL_ARB_vertex_attrib_64bit on i965/ivb
>  *   GL_NV_fill_rectangle on nvc0
>  *   Geometry shaders enabled on swr
>
> […]
>
> Changes
>
> *   Removed the ilo gallium driver.
> *   The configure option --enable-gallium-llvm is superseded by --enable-llvm.
> *   The swr driver now requires LLVM >= 3.9.0 and a C++14 capable compiler.
> *   The radeonsi driver now requires LLVM 3.8.0.
> *   The MESA_GLSL=opt and MESA_GLSL=no_opt environment vars have been removed.
> *   The --with-egl-platforms configure option is deprecated. Use --with-platforms instead.

[1] https://www.mesa3d.org/relnotes/17.1.0.html

mesalib.be0

@@ -1,6 +1,6 @@
 #!/usr/bin/env beesh
 
-# BEE_VERSION mesalib-17.0.3-0
+# BEE_VERSION mesalib-17.1.3-0
 
 ## this file was created by bee init and should be executed to build a
 ## bee-package. (Additional hints are located at the end of this file.)
@@ -15,7 +15,7 @@ SRCURL[0]="https://mesa.freedesktop.org/archive/mesa-${PKGVERSION}.tar.xz"
 ## Add URLs/pathes to patch files to the PATCHURL array.
 ## The sources will be patched in the order of the array.
 
-PATCHURL+=(http://www.linuxfromscratch.org/patches/blfs/svn/mesa-17.0.3-add_xdemos-1.patch)
+PATCHURL+=(http://www.linuxfromscratch.org/patches/blfs/svn/mesa-17.1.3-add_xdemos-1.patch)
 
 ###############################################################################
 ## Add filename patterns to the EXCLUDE array of files that should not