Added Molex 0480371000 USB A plug (SMT)

- AUTHORS, components/INFO, components/usb_a_plug.lib,
  components/usb_a_plug.dcm: added symbol for USB A plug
- AUTHORS, modules/INFO, modules/usb_a_plug_smt.fpd: added footprint for
  USB A plug
- BOOKSHELF: added Molex 0480371000 USB A plug for SMT
- AUTHORS: corrected type in file extension of modules/xtal-4.fpd (was .fpg)

modules/INFO

@@ -64,3 +64,6 @@ F: 0805-6
 #
 F: mmcx-f-edge
 N: 73415-0961
+
+# USB A plug for SMT
+F: usb_a_plug_smt

modules/Makefile

@@ -1,4 +1,4 @@
-MODULES=0805-6 meander mini-usb mmcx-f-edge qfn qfp xtal-4
+MODULES=0805-6 meander mini-usb mmcx-f-edge qfn qfp usb_a_plug_smt xtal-4
 
 .SUFFIXES:	.fpd .mod
 .PHONY:		all clean

modules/usb_a_plug_smt.fpd

@@ -0,0 +1,95 @@
+/* MACHINE-GENERATED ! */
+
+frame pad {
+	table
+	    { h, w }
+	    { 2mm, 1.2mm }
+
+	__0: vec @(w/2, h/2)
+	__1: vec @(-w/2, -h/2)
+	pad "$name" . __0
+}
+
+frame pads {
+	table
+	    { name, x }
+	    { 1, 3.5mm }
+	    { 2, 1mm }
+	    { 3, -1mm }
+	    { 4, -3.5mm }
+
+	__0: vec @(0mm, 2.6mm)
+	__1: vec .(x, 0mm)
+	frame pad .
+}
+
+frame shield {
+	table
+	    { name, x }
+	    { 5, -B/2 }
+	    { 6, B/2 }
+
+	table
+	    { hi, wi }
+	    { 2.5mm, 1mm }
+
+	set ho = hi*1.5
+
+	set wo = wi*1.5
+
+	__0: vec @(x, 0mm)
+	__1: vec .(wo/2, ho/2)
+	__2: vec __0(-wo/2, -ho/2)
+	rpad "$name" . __1
+	__3: vec __0(wi/2, hi/2)
+	__4: vec __0(-wi/2, -hi/2)
+	hole . __3
+}
+
+frame holes {
+	set d = 1.1mm
+
+	table
+	    { x }
+	    { -C/2 }
+	    { C/2 }
+
+	__0: vec @(x, 0mm)
+	__1: vec .(d/2, d/2)
+	__2: vec __0(-d/2, -d/2)
+	hole . __1
+}
+
+frame edge {
+	set w = 5mil
+
+	__0: vec @(0mm, -2.75mm)
+	__1: vec .(B/2, 0mm)
+	__2: vec __0(-B/2, 0mm)
+	line . __1 w
+}
+
+package "USB-A-PLUG-SMT"
+unit mm
+
+table
+    { A, B, C }
+    { 2mm, 11.4mm, 4.5mm }
+
+frame edge @
+frame holes @
+frame pads @
+frame shield @
+measx pads.__1 >> pads.__1 3mm
+measx pads.__1 -> pads.__1 2.5mm
+measx pad.__1 -> pad.__0 3mm
+measy pad.__1 -> pad.__0 0.5mm
+measx shield.__2 -> shield.__1 -2.5mm
+measy shield.__2 -> shield.__1 1.5mm
+measy shield.__4 -> shield.__3 1mm
+measx shield.__4 -> shield.__3 -2mm
+measx shield.__0 >> shield.__0 6.5mm
+measx holes.__0 >> holes.__0 -1.5mm
+measy holes.__2 -> holes.__1 1mm
+measy edge.__1 >> shield.__0 -2mm
+measy pads.__0 << shield.__0 -2mm