Fix issues on 16550, 16450/8250 UART controllers from intel.lib

Fix the 16550 pin issues pointed out by cceckman
(https://github.com/KiCad/kicad-library/issues/8)
The 16550, 16450/8250, 8252 symbols has been slightly altered to match
Library Convention
Update ac-dc.lib to match Library Convention rules

* The pins had been aligned to 100mil grid and reduced (keeping previous
location where it possible)
* Pin numbers and names changed to 50mil height.
* Fields changed to 50mil height.
Update rfcom.lib and stm8.lib to match Library Convention rules

* The pins had been aligned to 100mil grid (keeping previous location
where it possible)
* Pin numbers and names changed to 50mil height.
* Fields changed to 50mil height.
* Two symbols in stm8.lib has been significally altered.
added soic, ssop 3d models
qfp64_7x7 repaired
Merge pull request #42 from michal777/master

Added SOIC and SSOP 3D models
Merge pull request #41 from lifton/master

Added SD card reader.
Added common cathode RGB LED symbol.