Bracket arguments to tr so they work with Solaris tr
Bracket arguments to tr so they work with Solaris tr

https://www.gnu.org/savannah-checkouts/gnu/autoconf/manual/autoconf-2.69/html_node/Limitations-of-Usual-Tools.html#index-g_t_0040command_007btr_007d-1842

Without this fix, egl fails to build on Solaris, with the error:

<command-line>:0:22: error: '_EGL_PLATFORM_x11' undeclared (first use in this function)
egldisplay.c:207:31: note: in expansion of macro '_EGL_NATIVE_PLATFORM'
             native_platform = _EGL_NATIVE_PLATFORM;
                               ^

Signed-off-by: Alan Coopersmith <ea3248f8c2440b9439894eab21ef26209b22bacf@oracle.com>
Reviewed-by: Matt Turner <789b315743a28dd066a4ba1459c35951c291d8a6@gmail.com>
Reviewed-by: Emil Velikov <4c996f2f093ddd0585a556460b4cc3ba555546ef@gmail.com>
Cc: "10.5" <59f39c0db42d4479a46b02d4d2bc11120e37bb44@lists.freedesktop.org>

metora/MesaGLSLCompiler,metora/MesaGLSLCompiler,metora/MesaGLSLCompiler