hooklib: Split out of util

This is distinct from capnhook's hooklib, although the intent is
the same. Hopefully these two libraries sharing a name won't get
too confusing...

hooklib/meson.build

@@ -0,0 +1,21 @@
+hooklib_lib = static_library(
+    'hooklib',
+    include_directories : inc,
+    implicit_include_directories : false,
+    c_pch : '../precompiled.h',
+    dependencies : [
+        capnhook.get_variable('hook_dep'),
+    ],
+    sources : [
+        'clock.c',
+        'clock.h',
+        'fdshark.c',
+        'fdshark.h',
+        'gfx.c',
+        'gfx.h',
+        'setupapi.c',
+        'setupapi.h',
+        'spike.c',
+        'spike.h',
+    ],
+)