phabricator: rework phabread to reduce memory usage and round-trips
This patch reworked phabread a bit so it fetches the lightweight
"Differential Revision" metadata for a stack first. Then read other data.
This allows the code to:
a) send 1 request to get all `hg:meta` data instead of N requests
b) patches are read in desired order, no need to buffer the output
"b)" reduces the memory usage from O(N^2) to O(N) since we no longer keep
old patch contents in memory.
The above `N` means the number of patches in the stack.
#require docutils gettext
Error: the current ro localization has some rst defects exposed by
moving pager to core. These two warnings about references are expected
until the localization is corrected.
$ $TESTDIR/check-gendoc ro
checking for parse errors
gendoc.txt:58: (WARNING/2) Inline interpreted text or phrase reference start-string without end-string.
gendoc.txt:58: (WARNING/2) Inline interpreted text or phrase reference start-string without end-string.