Make clean target work for MSVC dll Makefile on Windows.

Change-Id: Ifb9a00530720e0997421af9a07ae8c133f0edfd0
Add note about translations to MSVC build instructions.

Change-Id: I06ed441801f50a7331d7610beaf6535f6ec0c602
Compile imxtools as gnu99 standard.

With current MinGW using c99 as standard the compiler causes problems with some
types.  Use gnu99 standard instead which doesn't do this.

Change-Id: I731f58025645ae88ac226593a2b2a62140285ee8
Plugins: remove defined keys which are never used

Change-Id: I0195ae43f35c7355de66d5fa8caa24d8da6cb61e
Reviewed-on: http://gerrit.rockbox.org/883
Reviewed-by: Amaury Pouly <amaury.pouly@gmail.com>
sonynwz: fix backlight

Apparently the backlight driver is leaking current even when the PWM set to 0.
This patch should greatly improve the battery life of the device.

Change-Id: I76bbc8a87cae452e599b37de17e91f373cee58bc
Introduce plugin keymaps for the Sony NWZ Series

Change-Id: I46b8766bd44118bce4931b7ee71815ae5f51cb2e
Reviewed-on: http://gerrit.rockbox.org/879
Reviewed-by: Amaury Pouly <amaury.pouly@gmail.com>
rolo: fix crc calculation for mi4

crc32gentab() which initilizes crc table was called in bootloader
but not in main binary. Fix this temporary by always calling it in
load_mi4(). The proper fix probably to switch to const table and
drop runtime initialization.

Change-Id: I8b0c2c791642f56ed56189d156647661935a815d
Sony NWZ: calibrate discharge curves

The charging curve also need to be calibrated but that will be part of another
commit.

Change-Id: Ie4c5995123e4059ae4f3c9d86c11fc1257314d39
SVG image of the Sony NWZ-E360 and other formats for the manual.

Change-Id: I2783dd39a773d952997e4a6d28916290e0dd5f65
Reviewed-on: http://gerrit.rockbox.org/889
Reviewed-by: Amaury Pouly <amaury.pouly@gmail.com>
Finished SVG Image for Sansa Clip Zip.

Added labels and power button.

Original author: Marko Pahlke, FS#12602

Change-Id: I17cfa245fcd36755162a3c527de6ba768568a376