Change directory structure to align with Atmel softpack

This way we can easily check with 'diff' for differences in our code and
Atmel softpack.  Also, this layout is more suitable for building various
different firmware images (e.g. factory-test, dfu-loader, main
application) for a variety of different boards (simtrace, owhw, qmod).

firmware/libboard/common/resources/sam3s_vb_sram.gdb

@@ -0,0 +1,27 @@
+#*************************************************
+#
+#  Connect to J-Link and debug application in sram on SAM3S
+#
+# Note:
+#     First, users should modify Step1 and Step2 according to their project,
+#     then do Step3.
+
+# Step1: Connect to the J-Link gdb server
+define reset
+target remote localhost:2331
+monitor reset
+
+# Step2: Load file(eg. getting-started project)
+load
+
+# Step3: Reset peripheral  (RSTC_CR)
+set *0x400e1400 = 0xA5000004
+
+# Step4: Initializing PC and stack pointer
+# Modify pc value to even before writing pc register
+mon reg sp=(0x20000000)
+set *0x20000004 = *0x20000004 & 0xFFFFFFFE
+mon reg pc=(0x20000004)
+info reg
+
+end