plsdk/log.h: fix file description in copyright header
plconfig.c: fix file path for Android + /etc/plsdk.ini

When building for Android, there is no HOME directory so
always use /system/etc/plsdk.ini.  Also use /etc/plsdk.ini
on standard Linux systems if there is no .plsdk.ini in the
home directory.
ChangeLog v1.0 -> v1.1