relconv, relconv_lp, relconv_lp_ext: convolve with relativistic accretion disk line profile with different geometries

Convolves with one the family of relline line profiles. The basic code is described in Dauser et al. (2010) and the extension to lamp post geometries in Dauser et al. (2013).

The parameters for relconv are :

par1	Index1: emissivity index for the inner disk
par2	Index2: emissivity index for the outer disk
par3	Rbr: break radius separating the inner and outer portions of the disk (gravitational radii)
par4	a: dimensionless black hole spin
par5	Incl: disk inclination angle to the line of sight (degrees)
par6	Rin: inner radius of the disk in units of the radius of marginal stability
par7	Rout: outer radius of the disk in units of the radius of marginal stability
par8	limb: limb-darkening/-brightening law with 0=isotropic, 1=darkening (flux 1+2.06mu), 2=brightening (flux ln(1+1/mu)) where mu=cos(emission angle)
norm	flux in line (photons/cm$^2$/s)

The parameters for relconvlp are :

par1	h: height of the primary source (GM/c2̂)
par2	a: dimensionless black hole spin
par3	Incl: disk inclination angle to the line of sight (degrees)
par4	Rin: inner radius of the disk in units of the radius of marginal stability
par5	Rout: outer radius of the disk in units of the radius of marginal stability
par6	limb: limb-darkening/-brightening law with 0=isotropic, 1=darkening (flux 1+2.06mu), 2=brightening (flux ln(1+1/mu)) where mu=cos(emission angle)
par7	gamma: power-law index of the primary source (E-̂gamma)
norm	flux in line (photons/cm$^2$/s)

and the parameters for relconvlpext are :

par1	a: dimensionless black hole spin
par2	Incl: disk inclination angle to the line of sight (degrees)
par3	Rin: inner radius of the disk in units of the radius of marginal stability
par4	Rout: outer radius of the disk in units of the radius of marginal stability
par5	limb: limb-darkening/-brightening law with 0=isotropic, 1=darkening (flux 1+2.06mu), 2=brightening (flux ln(1+1/mu)) where mu=cos(emission angle)
par6	gamma: power-law index of the primary source (E-̂gamma)
par7	hbase: lower height of radially extended primary source
par8	htop: upper height of radially extended primary source
par9	vbase: velocity of the source at hbase
par10	v100: velocity of the source at 100 rg above hbase
norm	flux in line (photons/cm$^2$/s)

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