jpeg: Split header into separate file
tiff: Split header into separate file
tifflike: Split header into separate file
Split gdkpixbuf, jp2k, png headers into separate files
leica: Avoid libxml xxxPtr typedefs
leica: Consolidate XPath property-setting functions
leica: Return int64_t directly from parse_int_attr()
Create decode-xml from leica libxml2 helpers
leica: Move variable declarations
leica: Rename XPath context
Generate YCbCr conversion tables at compile time
Allow enabling of grid tile outlines via OPENSLIDE_DEBUG env var
Record try function names for error logging
Add debug flag to log FORMAT_NOT_SUPPORTED error messages
test/driver: Sanitize additional environment variables

that may affect the test output.
hamamatsu: Add debug flag for verifying MCU starts
hamamatsu: verify_mcu_starts() cleanups
test: Run verify_mcu_starts() in successful hamamatsu test cases
generic-tiff: Drop unnecessary include
Makefile: Quote paths in make rules