Cleaning up lib-src

FileDialog goes into audacity/src/widgets and the mod-* directories go into
audacity/modules.

This leaves nothing in lib-src that isn't a 3rd-party libs or supporting
files.

modules/mod-nyq-bench/images/edit-find-small.xpm

@@ -0,0 +1,99 @@
+/* XPM */
+static const char *edit_find_small[] = {
+/* columns rows colors chars-per-pixel */
+"16 16 77 1",
+"  c #6C6E6A",
+". c #757673",
+"X c #7E807B",
+"o c #818380",
+"O c #828480",
+"+ c #848482",
+"@ c #888A85",
+"# c #898B86",
+"$ c #8A8C87",
+"% c #8C8E89",
+"& c #8D8F8A",
+"* c #8D8E8C",
+"= c #9A9B97",
+"- c #A3A4A3",
+"; c #A8A9A6",
+": c #A3AEBB",
+"> c #B8B8B7",
+", c #85A9CF",
+"< c #8BACCF",
+"1 c #90ADCB",
+"2 c #97AFCB",
+"3 c #93AFCE",
+"4 c #81A6D0",
+"5 c #80A7D1",
+"6 c #80A8D1",
+"7 c #89ABD0",
+"8 c #8AACD2",
+"9 c #8EB2D8",
+"0 c #97B4D3",
+"q c #91B3D6",
+"w c #99B3D0",
+"e c #9FB8D1",
+"r c #9CBAD9",
+"t c #A7B5C3",
+"y c #A8B7C8",
+"u c #AEBAC8",
+"i c #A8B9CD",
+"p c #A2B8D0",
+"a c #A6BCD2",
+"s c #A2BAD4",
+"d c #A0BAD6",
+"f c #A9BFD6",
+"g c #A3BDDA",
+"h c #A0BEDF",
+"j c #A5C0DF",
+"k c #AFC5DF",
+"l c #B3C8DC",
+"z c #A5C1E0",
+"x c #B2CAE3",
+"c c #B3CAE5",
+"v c #BFD3E7",
+"b c #BCD0E8",
+"n c #C7C7C6",
+"m c #CFCFCD",
+"M c #D6D6D5",
+"N c #D6D7D5",
+"B c #C1D4E9",
+"V c #C1D4EA",
+"C c #C3D7EB",
+"Z c #C5D7EA",
+"A c #C8D9EC",
+"S c #CADAEC",
+"D c #CDDCED",
+"F c #CFDDEE",
+"G c #D0DEEE",
+"H c #D9E4F1",
+"J c #DAE5F2",
+"K c #DCE6F2",
+"L c #DDE7F2",
+"P c #F0F0EF",
+"I c #E0EAF3",
+"U c #E4ECF5",
+"Y c #E8EEF7",
+"T c #FAFAF9",
+"R c #FEFEFD",
+"E c gray100",
+"W c None",
+/* pixels */
+"=@@@@@@@@@@&WWWW",
+"$EEEEEEEEEE@WWWW",
+"@EPPPPPPPPE@WWWW",
+"$EPnnnnnnPE@WWWW",
+"$EPPPPNooooOWWWW",
+"$EPnn;ouasioWWWW",
+"@EPPNoy8vZr1oWWW",
+"$EPno:,KYUS92oWW",
+"$EPPOihJIKVh5oWW",
+"@TPPOjjGJDAb5oWW",
+"$TPPOt7cCVGg3oWW",
+"@EEEmOeqkxs0o.WW",
+"&@@@@Xol<6wo-- W",
+"WWWWWW oooo*>--+",
+"WWWWWWWWWWWW*>-+",
+"WWWWWWWWWWWWW**+"
+};