Consolidated emcpose functions to single file
removed extraneous externs and added missing functions
Merge branch 'feature/emcpos-functions' into circular-blend-arc-experimental
Refactor TP to include new emcpose functions
Merge branch 'circular-blend-arc-beta' into circular-blend-arc-experimental
Scratchwork on spherical arc functions
Started conversion to arc
Working SLERP and spherical arcs
Miscellaneous refactoring to add cases
Simplified code in tcGetPosReal for readability
Removed old circle-based blend arc functions
Merge branch 'feature/spherical-arc' into circular-blend-arc-experimental
Added extra test file
Estimate minimum segment length of next line based on d_prev
Added length bound on blend arcs for previous parabolic blends
Tighter tolerances on some constants
Merge branch 'feature/blend-length-limits' into circular-blend-arc-experimental
Move TP files to their own folder

Also updates Makefile and Submakefile to find headers and link
appropriate objects
Working planar acceleration bound
Small optimization and comments