pkcs11-tool: Let the user choose the ECDSA signature format
pkcs11-tool: Let the user choose the ECDSA signature format

Instead of hard-coding the format depending on whether OpenSC was compiled with
OpenSSL or not, the user should be able to choose the format himself.
The default format now is the normal concatenation of R,S both for CKM_ECDSA
and CKM_ECDSA_SHA1.

dirkx/OpenSC.tokend,CardContact/OpenSC,mouse07410/OpenSC,carlhoerberg/OpenSC,l1k/OpenSC,mtrojnar/OpenSC,martinpaljak/OpenSC,carlhoerberg/OpenSC,dirkx/OpenSC,OpenSC/OpenSC,viktorTarasov/OpenSC-SM,adminmt/OpenSC,financeX/OpenSC,AktivCo/OpenSC,Jakuje/OpenSC,CardContact/OpenSC,carlhoerberg/OpenSC,tidatida/OpenSC,tidatida/OpenSC,marschap/pkg-opensc,philipWendland/OpenSC,rickyepoderi/OpenSC,dirkx/OpenSC.tokend,OpenSC/OpenSC,LudovicRousseau/OpenSC,dirkx/OpenSC,UIKit0/OpenSC,metsma/OpenSC,ieugen/OpenSC,hongquan/OpenSC-main,hongquan/OpenSC-main,dirkx/OpenSC.tokend,dirkx/OpenSC,adminmt/OpenSC,dirkx/OpenSC.tokend,metsma/OpenSC,mtrojnar/OpenSC,germanblanco/OpenSC,germanblanco/OpenSC,fabled/OpenSC,AktivCo/OpenSC,martinpaljak/OpenSC,marschap/pkg-opensc,hhonkanen/OpenSC,nmav/OpenSC,dirkx/OpenSC.tokend,dengert/OpenSC,kasparsd/opensc-latvia-id,UIKit0/OpenSC,aobaid/OpenSC,LudovicRousseau/OpenSC,mouse07410/OpenSC,dengert/OpenSC,dirkx/OpenSC,aobaid/OpenSC,tidatida/OpenSC,carlhoerberg/OpenSC,hongquan/OpenSC-main,aobaid/OpenSC,adminmt/OpenSC,financeX/OpenSC,financeX/OpenSC,velter/OpenSC,dengert/OpenSC,ieugen/OpenSC,Jakuje/OpenSC,ieugen/OpenSC,jpki/OpenSC,velter/OpenSC,velter/OpenSC,AktivCo/OpenSC,financeX/OpenSC,kasparsd/opensc-latvia-id,tidatida/OpenSC,kasparsd/opensc-latvia-id,carlhoerberg/OpenSC,hhonkanen/OpenSC,aobaid/OpenSC,CardContact/OpenSC,LudovicRousseau/OpenSC,marschap/pkg-opensc,velter/OpenSC,fabled/OpenSC,gemini/OpenSC,viktorTarasov/OpenSC-SM,mouse07410/OpenSC,philipWendland/OpenSC,metsma/OpenSC,OpenSC/OpenSC,hhonkanen/OpenSC,germanblanco/OpenSC,fabled/OpenSC,rickyepoderi/OpenSC,fabled/OpenSC,rickyepoderi/OpenSC,UIKit0/OpenSC,mtrojnar/OpenSC,financeX/OpenSC,jpki/OpenSC,frankmorgner/OpenSC,gemini/OpenSC,frankmorgner/OpenSC,dirkx/OpenSC,jpki/OpenSC,Jakuje/OpenSC,frankmorgner/OpenSC,ieugen/OpenSC,UIKit0/OpenSC,gemini/OpenSC,nmav/OpenSC,kasparsd/opensc-latvia-id,frankmorgner/OpenSC,Jakuje/OpenSC,philipWendland/OpenSC,ieugen/OpenSC,l1k/OpenSC,marschap/pkg-opensc,l1k/OpenSC,martinpaljak/OpenSC,adminmt/OpenSC,viktorTarasov/OpenSC-SM,dirkx/OpenSC.tokend,nmav/OpenSC