battpack: add configuration for EXP430FR5969
battpack: fix error detecting completion of wait period
u8glib: adapt for proposed inverted display support

See http://code.google.com/p/u8glib/issues/detail?id=253 for a patch
that avoids the need to invert the CGRAM buffer before and after sending
it to the device.  The mods will become permanent if I can convince the
maintainer to accept this change.
lpm: add source-edit options for unused pin configuration

User's manual documents output low, input pullup, input pulldown as
viable configurations.  Experimentation suggests there is no effective
difference among these: all still require that connected pins be managed
appropriately (cf
http://forum.43oh.com/topic/5307-optimizing-lpm-current-on-exp430fr5969-and-other-boards/).

Output low takes the fewest instructions from PUC state, so it's what
we're using by default.
exp430fr5969/lpm3p5: add example

Somewhat similar to part of the OOB Experience: wake up once per minute,
measure voltage, display it (over serial), and go back to sleep.
sharp96: error updating last row of first window

Because the display wants lines starting at 1, and we want a pixel
buffer starting at 0, the first update had one too few rows initialized.
m25p: correct placement/name of supports macro reference
examples/m25p: add support for external W25Q80BV on EXP430F5529LP
sensors/sht21: fix compatibility issue with HTU21D
sensors: change I2C bus on EXP430F5529LP

The new standard I2C bus location for booster packs requires use of
USCI5_B1; also that's the assignment being used for a sensor
application.
console: add functions to display memory contents

Too much clone-and-own: make these available generally.
sensors/tsl2561: add example
msp430-elf: add toolchain support

While mspgcc remains the default, the intent is to fully support
msp430-elf as requested by a non-empty WITH_GCC_MSP430_ELF Make
variable.

Doing this effectively required changing the representation of false in
boolean Make variables from 0 to an empty string.
Makefile: consistently use empty string for Make variable false value
ntp: display resolved address when switching server
bootstrap/aboutme: add example

This is mostly to have a permanent demonstration of how to detect
toolchain-specific features, and to probe that space within the
msp430-elf toolchain.
examples/sht21: fix type of object passed by pointer
cleanup: fixes for makeallplat to pass with mspgcc
cleanup: fixes for makeallplat to pass with msp430-elf

Not all examples build: TI changed the header so CC430F5137 cannot
detect its broken CRC implementation; msp430-elf creates bigger images
so some applications overflow flash; some examples still depend on
mspgcc features like <sys/crtld.h>.
exp430fr5969: remove ineffective fragment from past experimentation