Summary of module in documentation
Added import table to documentation
added indmax,indmin,findmax,findmin for sparse matrices.

fixes #7577
Use system-specific fname in getDylibFunctionInfo
Corrections on import/using table and typo
More corrections on using/import table
Update banner, since we no longer show a list of help topics.
Add apropos() that defaults to showing what help() shows.
rename stringpatch to stringreplace

to avoid requiring admin rights in win32, see
https://cygwin.com/ml/cygwin/2014-03/msg00191.html
Merge pull request #7746 from tkelman/rename-stringpatch

rename stringpatch to stringreplace
prevent merging of type error code from different locations. fixes #7372
improve keyword argument syntax error. fixes #7743
Add sinpi and cospi to vectorized functions

sinpi and cospi were missing from the list of built-in vectorized functions. I have added them next to sin and cos respectively in the doc.
Merge pull request #7750 from gajjanag/patch-2

Add sinpi and cospi to vectorized functions
Merge pull request #7578 from tanmaykm/tanmaykm

added indmax and indmin for sparse matrices.
Revert "added indmax and indmin for sparse matrices."
Merge pull request #7751 from JuliaLang/revert-7578-tanmaykm

Revert "added indmax and indmin for sparse matrices."
Use NTFS junctions to share/julia/base etc instead of Cygwin symlinks
Merge pull request #7752 from tkelman/cygwin-buildfix

Use NTFS junctions to share/julia/base etc instead of Cygwin symlinks
nano is 10^9 (profiling, fix #7720)
Make doctests pass

Reflects lots of small changes in printouts and error messages, line numbers, etc.

Nontrivial changes:
- Bump JuliaDoc submodule
- The control flow documentation had to be reformatted slightly to make
  doctests pass.  The output of Task(...) now prints out a memory
  address which is clearly not reproducible, so the output is
  suppressed.
- Some roundoff printing issues in complex-and-rational-numbers?
- isequal(NaN,NaN32) == true
- It also looks like sqrt(-1) no longer prints a helpful error message
  about trying sqrt(complex(-1))...?
- strings.rst, line 239: "ERROR: BoundsError() in getindex at
  ascii.jl:11" no longer prints out traceback??
- control-flow.rst, line 638: UndefVarError->MyUndefVarError to prevent
  overwriting Base UndefVarError

WARNNG: Because union types appear to be unsorted on output, sometimes
Union(a,b) is printed out as Union(b,a). This causes the doctests to
fail nondeterministically, e.g.

Failed example:
    super(Union(Float64,Int64))
Expected:
    ERROR: `super` has no method matching super(::Type{Union(Float64,Int64)})
Got:
    ERROR: `super` has no method matching super(::Type{Union(Int64,Float64)})