Enables g++ compilation

[vsreekanti]

Fixes #15, #20.

• Enables support for compilation with GNU g++.
• g++ compilation transitively enables compilation on Fedora.
• Also changes scripts/install-dependencies.sh to detect Linux distribution base and react appropriately.

For some reason, make test fails with a seg fault when compiling with g++, but the KVS processes all still are able to start, and the simple test succeeds. It just a bug with the unit tests.

[codecov]

Codecov Report

Merging #23 into master will not change coverage.
The diff coverage is 0%.

@@           Coverage Diff           @@
##           master      #23   +/-   ##
=======================================
  Coverage   62.72%   62.72%           
=======================================
  Files          50       50           
  Lines        1438     1438           
=======================================
  Hits          902      902           
  Misses        536      536

Impacted Files	Coverage Δ
kvs/src/hash_ring/hash_ring.cpp	0% <0%> (ø)	⬆️

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[cw75]

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (master@810367a). Click here to learn what that means.
The diff coverage is 0%.

@@            Coverage Diff            @@
##             master      #23   +/-   ##
=========================================
  Coverage          ?   62.72%           
=========================================
  Files             ?       50           
  Lines             ?     1438           
  Branches          ?        0           
=========================================
  Hits              ?      902           
  Misses            ?      536           
  Partials          ?        0

Impacted Files	Coverage Δ
kvs/src/hash_ring/hash_ring.cpp	0% <0%> (ø)

---

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Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
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[codecov]

Codecov Report

Merging #23 into master will not change coverage.
The diff coverage is 0%.

@@           Coverage Diff           @@
##           master      #23   +/-   ##
=======================================
  Coverage   62.79%   62.79%           
=======================================
  Files          50       50           
  Lines        1454     1454           
=======================================
  Hits          913      913           
  Misses        541      541

Impacted Files	Coverage Δ
kvs/src/hash_ring/hash_ring.cpp	0% <0%> (ø)	⬆️

---

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Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 810367a...42c334b. Read the comment docs.