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/go-up-small.xpm

@@ -0,0 +1,127 @@
+/* XPM */
+static const char *go_up_small[] = {
+/* columns rows colors chars-per-pixel */
+"16 16 105 2",
+"   c #3A7304",
+".  c #3A7404",
+"X  c #3B7404",
+"o  c #3B7504",
+"O  c #3C7804",
+"+  c #3E7A05",
+"@  c #3E770A",
+"#  c #40780D",
+"$  c #41790E",
+"%  c #41790F",
+"&  c #4C8418",
+"*  c #4F841D",
+"=  c #53A308",
+"-  c #59AB0B",
+";  c #59AC0B",
+":  c #5EB30D",
+">  c #5FB20F",
+",  c #5FB40D",
+"<  c #5FB50D",
+"1  c #5CA21A",
+"2  c #63BA0F",
+"3  c #64BC0F",
+"4  c #65B616",
+"5  c #65BD10",
+"6  c #65BE10",
+"7  c #66BE10",
+"8  c #66BF10",
+"9  c #66B01D",
+"0  c #68BA19",
+"q  c #6DBD1F",
+"w  c #568926",
+"e  c #578928",
+"r  c #578A28",
+"t  c #588B28",
+"y  c #679C35",
+"u  c #6A9C3B",
+"i  c #6CAF2C",
+"p  c #74B438",
+"a  c #76B13F",
+"s  c #67C011",
+"d  c #67C111",
+"f  c #69C311",
+"g  c #6AC512",
+"h  c #6BC712",
+"j  c #6CC813",
+"k  c #6DC913",
+"l  c #71CF15",
+"z  c #78C331",
+"x  c #78A54E",
+"c  c #7AB344",
+"v  c #7DB448",
+"b  c #7FA956",
+"n  c #80B64D",
+"m  c #84B455",
+"M  c #86BC51",
+"N  c #86B35B",
+"B  c #8BBE5A",
+"V  c #8CBD5F",
+"C  c #96BD72",
+"Z  c #81C143",
+"A  c #85C14D",
+"S  c #89C94B",
+"D  c #8BC356",
+"F  c #91C560",
+"G  c #96CA63",
+"H  c #97CD63",
+"J  c #95C26A",
+"K  c #96C569",
+"L  c #97C36E",
+"P  c #9BCE6A",
+"I  c #9ACA6C",
+"U  c #9AC471",
+"Y  c #9AC572",
+"T  c #A0CB77",
+"R  c #A2C77E",
+"E  c #A0C97A",
+"W  c #A6D37B",
+"Q  c #A1C480",
+"!  c #A7CA87",
+"~  c #AAD581",
+"^  c #ABD781",
+"/  c #ACD982",
+"(  c #ADD982",
+")  c #ADDA82",
+"_  c #AEDB82",
+"`  c #AFDC83",
+"'  c #B0DE83",
+"]  c #B0D291",
+"[  c #B5D597",
+"{  c #B7D49C",
+"}  c #B2E184",
+"|  c #B3E384",
+" . c #B4E585",
+".. c #BBD7A0",
+"X. c #C1DFA5",
+"o. c #C7DFB0",
+"O. c #C5E2A9",
+"+. c #C8E4AD",
+"@. c #CAE5B0",
+"#. c #CBE5B3",
+"$. c #CBE6B2",
+"%. c #CAE0B5",
+"&. c #CEE5B8",
+"*. c #D0E5BC",
+"=. c None",
+/* pixels */
+"=.=.=.=.=.=.=.. X =.=.=.=.=.=.=.",
+"=.=.=.=.=.=.=.t w =.=.=.=.=.=.=.",
+"=.=.=.=.=.=.# ! R # =.=.=.=.=.=.",
+"=.=.=.=.=.. C Y J N . =.=.=.=.=.",
+"=.=.=.=.. x ] v a J u   =.=.=.=.",
+"=.=.=.=.t ..V n c 1 Y * =.=.=.=.",
+"=.=.=.# { E B M p = i Y @ =.=.=.",
+"=.=.. Q [ K F D 9 - ; A m X =.=.",
+"=.. b o.T P H n : < < : P y   =.",
+"=.t %.*.&.+.H 0 3 3 ` _ _ W & =.",
+". .     + $.S 8 f h } +       . ",
+"=.=.=.=.  +.z 8 k l  .. =.=.=.=.",
+"=.=.=.=.  +.q 8 f k |   =.=.=.=.",
+"=.=.=.=.  O.4 5 8 s '   =.=.=.=.",
+"=.=.=.=.  X.~ ~ _ _ _   =.=.=.=.",
+"=.=.=.=..             . =.=.=.=."
+};