Log message:
xmlindent: remove backup file

Log message:
textproc/xmlindent: Fix makefile dependencies.

Resolves:

===> Building for xmlindent-0.2.16nb1
cc -O2 -c error.c
cc -O2 -c indent.c
indent.c:38:10: fatal error: lex.yy.c: No such file or directory
 #include "lex.yy.c"
          ^~~~~~~~~~
compilation terminated.

Log message:
*: Remove many GCC_REQD for particularly old GCCs

In many cases the reasoning is poorly documented, or the reasoning
for setting GCC_REQD is to work around a compiler bug. Practically
a c99 compiler is now required for bootstrap (in at least several
dependencies) so we can entirely rule out GCC versions before 3.0.

Log message:
xmlindent: Honour CFLAGS/LDFLAGS, should help the build on some platforms

Log message:
xmlindent: Set LICENSE

Log message:
textproc: Replace RMD160 checksums with BLAKE2s checksums

All checksums have been double-checked against existing RMD160 and
SHA512 hashes

Unfetchable distfiles (fetched conditionally?):
./textproc/convertlit/distinfo clit18src.zip

Log message:
textproc: Remove SHA1 hashes for distfiles

Log message:
xmlindent: specifically needs flex

Log message:
all: migrate homepages from http to https

pkglint -r --network --only "migrate"

As a side-effect of migrating the homepages, pkglint also fixed a few
indentations in unrelated lines. These and the new homepages have been
checked manually.

Log message:
Make lex/flex a runtime dependency for packages which link against -lfl.