Support dependencies as git url with exact commit

Merge pull request #1770 from andrew-stevenson-sociomantic/#1761 ...

Support multi-line comments
merged-on-behalf-of: Nicholas Wilson <thewilsonator@users.noreply.github.com>

Support multi-line comments ...

This is a work-around for #1761

Merge pull request #1767 from kinke/patch-1 ...

Changelog follow-up to #1755
merged-on-behalf-of: Nicholas Wilson <thewilsonator@users.noreply.github.com>

Changelog follow-up to #1755

Merge remote-tracking branch 'upstream/stable' into merge_stable

purge changelog

Merge pull request #1002 from John-Colvin/sourceGlobbing ...

Source globbing
merged-on-behalf-of: Nicholas Wilson <thewilsonator@users.noreply.github.com>

update version to v1.17.0

Merge pull request #1763 from JinShil/replace_old_types ...

Replace `hash_t` and `sizediff_t` with `size_t` and `ptrdiff_t`
merged-on-behalf-of: Nicholas Wilson <thewilsonator@users.noreply.github.com>

Replace `hash_t` and `sizediff_t` with `size_t` and `ptrdiff_t`

update version to v1.17.0-rc.1

disambiguate templates

typo

processVar => processVars

Deconvolute

Merge pull request #1755 from kinke/ldc ...

Improve user experience with ldc2, incl. cross-compilation
merged-on-behalf-of: Nicholas Wilson <thewilsonator@users.noreply.github.com>

update version to v1.17.0-beta.2

Fix linking shared libs with ldmd2 and gdmd

Improve cross-compilation support (replace `version` checks by BuildPlatform runtime checks) ...

Also fixes #1249. For LDC as implicit cross compiler, the file
extensions for libraries and object files etc. don't depend on the
compiler, but solely on the target. Targets selected with `--arch` are
correctly probed by dub, so that the parsed `BuildPlatform` represents
the target platform.

ldc2: Only use `-L--no-as-needed` for Linux *targets*

ldc2: Fix MSVC target detection for static libs ...

With --arch, the build (target) platform might now diverge from the host
platform. The compiler's default triple doesn't matter when
cross-compiling, so use the <name>.lib MSVC format when targeting Windows
but not MinGW.

This fixes one aspect of #1599.

Merge pull request #1756 from andre2007/fetch-sub-package ...

Support fetch sub-package

Enable specifying full target triples as --arch for ldc2 ...

By treating all 'architectures' containing a `-` as `-mtriple` values.
E.g., `dub --arch=wasm32-unknown-unknown-wasm` to cross-compile to
WebAssembly. This dub switch is already used when probing the compiler,
so the build platform detection works as expected.

Also add `wasm` as detected platform and use the .wasm executable file
extension (for ldc2).

This fixes #1749 when moving the `-mtriple` option from the dub config
file to the dub command line.

Support separate linking with ldc2 ...

This is basically #1548 with an augmented set of compiler flags being
included in the linking command lines.

Support fetch sub-package

Restrict extra ldc2 invocation for static libs to Windows hosts ...

Don't perform the does-default-target-triple-contain-msvc check on
non-Windows hosts (which would need a hacked LLVM to return true on
other hosts).

Support a few more ldc2 command-line options

Merge pull request #1754 from kinke/build_cmd ...

Revise build.cmd (remove curl.lib, add -O)
merged-on-behalf-of: Nicholas Wilson <thewilsonator@users.noreply.github.com>

Simplify build.sh: Drop obsolete libcurl specifics ...

According to the README, the min supported compiler version is v2.076.