Starting to integrate usb branch.

Optimized Makefiles

discovery/utils/gdb.script

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+#Copied and adapted from bfh example project
+
+target ext :4242
+
+# Set flash parallelism mode to 32, 16, or 8 bit when using STM32 F2/F4 microcontrollers
+# Uncomment next line, 2=32 bit, 1=16 bit and 0=8 bit parallelism mode
+#monitor flash set_parallelism_mode 2
+
+# Set character encoding
+set host-charset CP1252
+set target-charset CP1252
+
+# Reset to known state
+monitor reset
+
+# Load the program executable
+load
+
+# Enable Debug connection in low power modes (DBGMCU->CR)
+set *0xE0042004 = (*0xE0042004) | 0x7
+
+#sec_debug#
+# Set a breakpoint at main().
+tbreak main
+
+# Run to the breakpoint.
+continue
+