update in openfoam patch release

[olesenm]

New patch-release for OpenFOAM-v2012, tagged at 2021-04-14

https://sourceforge.net/projects/openfoam/files/v2012/OpenFOAM-v2012_210414.tgz

@boegel

[olesenm]

Short summary:

• [2f449c57ce] DOC: adjust wording
• [d2c0c97af8] BUG: redistributePar: symmetric logic. Fixes 1973.
• [b84caecc1e] BUG: useless copy of input (primitiveMeshTools::makeCellCentresAndVols)
• [4561717c51] BUG: incorrect returned size from surfaceWriter
• [81629a44d0] BUG: mapped: access map() for AMI cases. Fixes 1982
• [c9b34c52bb] COMP: bad template for foamNewFunctionObject (closes 1987)
• [f88feaf0d4] BUG: surfaceFieldValue fails writing legacy VTK format
• [d70e11195c] BUG: syncTools: incorrect communicator. See 1986
• [4245909efb] BUG: typo in etc/colourTables
• [77c31a7bef] BUG: inconsistent surfaceFieldValue writing (fixes 1999)
• [9913dfb31a] CONFIG: bump patch level
• [0ee7a23504] CONFIG: ensure PV_PLUGIN_PATH is also in the library path
• [ae8ccd7b94] BUG: foamToEnsight cellZones missing mesh coverage (closes 2002)
• [a334aaae78] ENH: noiseModel gainX - protect against very small input frequencies
• [a8c9b5936e] BUG: cannot set expression from command-line (fixes 2012)
• [8d3efa1cb9] BUG: AABBTree - corrected addressing. Fixes 2028
• [dbed3a0602] BUG: Curle FO - corrected division by 4pi. Fixes 2035
• [21dda3254c] BUG: noiseModel - respect lower frequency bound in octave calculation. Fixes 2041
• [19b90a1130] BUG: generic point patch fails (fixes 2062)
• [6740925621] CONFIG: bump patch level