Stream::parseInt & Stream::parseFloat previously had protected
overloads which allowed skipping a custom character. This commit
brings this feature to the public interface.
To keep the public API simpler, the single paramter overload remains
protected. However its functionality is available in the public
interface using the two parameter overload.
Its default is SKIP_ALL which reflects previous versions.
However SKIP_NONE, and SKIP_WHITESPACE can refine this behaviour.
A parameter used in the protected overloads of parseInt/Float has been
changed from `skipChar` to `ignore`.
Stream::find(char *target) passes an empty terminator string to
Stream::findUntil(char *target, char *terminator) which caused a compiler
warning with the updated toolchain, so cast it to a char*.
peekNextDigit() returns an int, so it can return -1 in addition to all
256 possible bytes. By putting the result in a signe char, all bytes
over 128 will be interpreted as "no bytes available". Furthermore, it
seems that on SAM "char" is unsigned by default, causing the
"if (c < 0)" line a bit further down to always be false.
Using an int is more appropriate.
A different fix for this issue was suggested in #1399. This fix helps
towards #1728.
Made some helper class for files filtering.
platforms.txt now contains only one platform at a time.
Some cleanup in Compiler and AvrDudeUploader classes.