[stm32] removed USE_ADC1_2_IRQ_HANDLER flag from makefiles, is not used/needed anymore with libopencm3
[tools] gen_modules_doc.py always check/create output dir
[tools] gen_modules_doc.py: get absolute path of file if PAPARAZZI_HOME is not set
[tools] gen_modules_doc.py collapse redundant separators in paparazzi_home path
[gen_modules] fix directory name for header includes
[stm32][mcu_periph] allow override of default I2Cx_CLOCK_SPEED
[stm32] indentation in i2c driver
[stm32] removed unused register definitions in i2c driver
Fix elf PT_LOAD type in lpc21iap LPC USB download
[stm32] indentation and comment cleanup in adc_arch
[boards] add lia board files (basiacally an alias for lisa_m_2.0 as they are identical from that standpoint)
[doc] some module description cleanups
[ground_segment] make multimon compile on arm
added ground_segment make target