Add support for more than two arguments to std.algorithm.setIntersection

This seems to have always been intended to work, but was left unfinished.
The old documentation, as well as the current entry in the cheat sheet,
claimed it supported any number of arguments.
fix Issue 10710 - phobos depends on versioned libcurl

- create a libcurl_stub.so for linking

- set it's soname to libcurl.so.4 so that phobos
  gets a DT_NEEDED libcurl.so.4 entry

- the runtime linker will load libcurl.so and resolve
  all undefined references

- disable pragma(lib, "curl") because it doesn't work
  for archives anyways and additionally links against
  the real libcurl (dmd appends -L-lcurl when building phobos).
Merge pull request #1796 from JakobOvrum/setintersection

Add support for more than two arguments to std.algorithm.setIntersection
fix property enforcement
Merge pull request #1799 from 9rnsr/enforceProp

fix property enforcement
Remove modules crc32 and std.md5 which had been deprecated by 6ff6adc5bf7d13b33e27985c53377cd20d7648e6
Merge pull request #1800 from Geod24/remove-deprecated-modules

Remove deprecated crc32 and std.md5
Revert "Remove modules crc32 and std.md5 which had been deprecated by 6ff6adc5bf7d13b33e27985c53377cd20d7648e6"

This reverts commit ecbc04f90d21303fd72d9ecfd501df15f49515a2.
Merge pull request #1803 from monarchdodra/revertDeprecate

Revert "Remove modules crc32 and std.md5 which had been deprecated by 6f...
fix Issue 11789 - No setAttributes to complement getAttributes

[Issue 11789](https://d.puremagic.com/issues/show_bug.cgi?id=11789)
Revert "fix Issue 11789 - No setAttributes to complement getAttributes"

This reverts commit c124140e09d7acaa6cd6d4a4d677adf68fc08c55.
fix Issue 11789 - No setAttributes to complement getAttributes

- add std.file.setAttributes

[Issue 11789](https://d.puremagic.com/issues/show_bug.cgi?id=11789)
Merge pull request #1772 from MartinNowak/fix10710

fix Issue 10710 - phobos depends on versioned libcurl
Merge pull request #1804 from MartinNowak/master

add std.file.setAttributes
Remove typetuple dependencies
Merge pull request #1807 from monarchdodra/typetupleImport

Remove typetuple dependencies
Disable setting thread priority
Add link to bug page
Merge pull request #1808 from mxfm/threadpriority

Disable setting thread priority in TaskPool unittest
Merge branch 'master' of github.com:D-Programming-Language/phobos into fewer-imports