Improve some J2DPictureEx matches

[hatal175]

• other minor debug improvements

[decomp-dev]

Report for GZ2E01 (7025de1 - cb63642)

📈 Matched code: 66.72% (+0.01%, +1668 bytes)

✅ 5 new matches:

Unit	Function	Bytes	Before	After
framework/JSystem/J2DGraph/J2DPictureEx	J2DPictureEx::changeTexture(const ResTIMG*, unsigned char, JUTPalette*)	+9	97.75%	100.00%
framework/JSystem/J2DGraph/J2DPictureEx	J2DPictureEx::isSetBlackWhite(JUtility::TColor, JUtility::TColor) const	+5	97.74%	100.00%
framework/JSystem/J2DGraph/J2DPictureEx	J2DPictureEx::remove(unsigned char)	+3	99.47%	100.00%
framework/JSystem/J2DGraph/J2DPictureEx	J2DPictureEx::drawOut(float, float, float, float, float, float)	+1	99.91%	100.00%
framework/JSystem/J2DGraph/J2DPictureEx	J2DPictureEx::changeTexture(const ResTIMG*, unsigned char)	+1	99.76%	100.00%