Synchronization locks as constructor arguments

[g4s8]

We need to be able to use custom lock for synchronization, not always Proc/Func/Scalar as lock.

[codecov-io]

Codecov Report

Merging #323 into master will decrease coverage by 0.31%.
The diff coverage is 0%.

@@             Coverage Diff              @@
##             master     #323      +/-   ##
============================================
- Coverage     74.22%   73.91%   -0.32%     
  Complexity      424      424              
============================================
  Files           131      131              
  Lines          1424     1430       +6     
  Branches         68       68              
============================================
  Hits           1057     1057              
- Misses          347      353       +6     
  Partials         20       20

Impacted Files	Coverage Δ	Complexity Δ
src/main/java/org/cactoos/func/SyncFunc.java	0% <0%> (ø)	0 <0> (ø)	⬇️
src/main/java/org/cactoos/func/SyncScalar.java	0% <0%> (ø)	0 <0> (ø)	⬇️

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[yegor256]

@rultor merge

[rultor]

@rultor merge

@yegor256 OK, I'll try to merge now. You can check the progress of the merge here

[rultor]

@rultor merge

@yegor256 Done! FYI, the full log is here (took me 9min)

[yegor256]

@rultor release, tag is 0.11.8

[rultor]

@rultor release, tag is 0.11.8

@yegor256 OK, I will release it now. Please check the progress here

[rultor]

@rultor release, tag is 0.11.8

@yegor256 Done! FYI, the full log is here (took me 9min)