Switch the build system to Meson

Modify the dlclose test to pick up libvdpau.so from the right place

Rename doc/Doxyfile to doc/Doxyfile.in and use Meson's configuration file
support to generate the Doxyfile.
Signed-off-by: Aaron Plattner <aplattner@nvidia.com>

trace/Makefile.am

-AM_CXXFLAGS = \
-    -I$(top_srcdir)/include \
-    $(X11_CFLAGS)
-
-module_LTLIBRARIES = libvdpau_trace.la
-
-libvdpau_trace_la_SOURCES = \
-    vdpau_trace.cpp
-
-libvdpau_trace_la_LIBADD = \
-    $(DLOPEN_LIBS)
-
-libvdpau_trace_la_LDFLAGS = -version-info 1:0:0 -module -no-undefined
-
-libvdpau_traceincludedir = $(includedir)/vdpau
-libvdpau_traceinclude_HEADERS = \
-    $(top_srcdir)/include/vdpau/vdpau.h \
-    $(top_srcdir)/include/vdpau/vdpau_x11.h

trace/meson.build

+trace = shared_library('vdpau_trace',
+    sources : 'vdpau_trace.cpp',
+    include_directories : inc,
+    dependencies : libdl,
+    version : '1.0.0',
+    install : true,
+    install_dir : moduledir,
+)

vdpau.pc.in

-prefix=@prefix@
-exec_prefix=@exec_prefix@
-libdir=@libdir@
-includedir=@includedir@
-moduledir=@moduledir@
-
-Name: VDPAU
-Description: The Video Decode and Presentation API for UNIX
-Version: @PACKAGE_VERSION@
-Requires.private: x11
-Cflags: -I${includedir}
-Libs: -L${libdir} -lvdpau